Nokia has started rolling out Windows Phone 7.8 update to Lumia smartphones. Finnish company will gradually release Windows Phone 7.8 for the Lumia 510, 610, 710, 800 and 900 during this month. Users started getting notifications from operators, however you can check manually if the update is available for your smartphone.

The Windows Phone 7.8 rollout started last night in the UK, so people started getting notifications from operators; it's a phased rollout throughout February, but should be finished by the end of the month", said Nokia's spokesperson.

Windows Phone 7.8 is just a stopgap measure for older handsets because if your device did not come with Windows Phone 8 you will not be able to get it via update. Alongside with WP 7.8 update, users of Windows Phone 8 will see an update which sports several enhancements regarding to the messaging system, IE browser, Wi-Fi connectivity and plenty of others.

Some of the changes in the new OS version can be seen here and include:

Start. Provides resizable small, medium, and large Live Tiles so you can customize your Start experience in new ways

Accent colors. Expands the number of available accent colors to 20.

Lock screen. Improves the lock screen experience with accidental wipe protection features and the Bing image of the day wallpaper.

Marketplace and Xbox. Expands Windows Phone Marketplace and Xbox support to new countries and regions.

Fonts. Enhances the Chinese font and improves the appearance of Arabic and other languages.

Other improvements. Includes many other improvements to Windows Phone.